In 2006 a new work project was started in IEC TC2 in order to harmonize energy efficiency classes. Currently many countries have local standards (either already in effect or announced), which are for the most part not compatible to each other. The situation is complicated even further as most non-European 50Hz countries have created regulations which are more or less related to the CEMEP-EU-Agreement while most 60Hz countries are mostly related to North-American regulations. However differences exist not only in the levels themselves but also in the test procedure, tolerances etc. This diversed situation creates many problems both for international manufacturers and for large OEMs and end users of such motors. This paper gives insight in the strategies of the new project and reports the current status.
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